package com.woniu.service;

import java.math.BigDecimal;
import java.util.Date;
import java.util.List;
import java.util.Map;

public interface DashboardService {
    BigDecimal getTotalSales();

    Long getOrderCount();

    Long getPendingOrderCount();

    Long getPayingUserCount();

    // 统计待审核教师数量
    Long countPendingTeachers();

    // 统计新增用户数量
    Long countNewUsers();

    List<Map<String, Object>> getYesterdayPaymentTrend();
}
